Computers and Control Systems: Service Precautions

2ZR-FE ENGINE CONTROL: SFI SYSTEM: PRECAUTION

1. INITIALIZATION

NOTICE:
* Perform RESET MEMORY (AT initialization) when replacing the automatic transaxle assembly, engine assembly or ECM Programming and Relearning
* Perform REGISTRATION (VIN registration) when replacing the ECM Programming and Relearning
HINT
Reset memory or initial initialization cannot be completed by only disconnecting and reconnecting the cable to the negative (-) battery terminal.

2. EXPRESSION OF IGNITION SWITCH

HINT
The type of ignition switch used on this model differs according to the specifications of the vehicle. The expressions listed in the table below are used in this section.





3. FOR USING TECHSTREAM

CAUTION:
Observe the following items for safety reasons:

* Read its instruction books before using the Techstream.

* Prevent the Techstream cable from being caught on the pedals, shift lever or steering wheel when driving with the Techstream connected to the vehicle.

* When driving the vehicle for testing purposes using the Techstream, two persons are required. One person drives the vehicle, and the other operates the Techstream.

4. DISCONNECTING AND RECONNECTING OF NEGATIVE BATTERY TERMINAL CABLE

(a) Before performing work on electric components, disconnect the cable from the negative (-) battery terminal in order to prevent damage to the electrical system or components.





(b) Before disconnecting and reconnecting the battery cable, turn the ignition switch off and the headlight switch OFF. Then loosen the terminal nut completely. Do not damage the cable or terminal.

(c) When the battery cable is disconnected, the clock and radio settings and stored DTCs are cleared. Therefore, before disconnecting the battery cable, make a note of the settings.